package com.example.yls.demoa;

import android.os.Binder;

/**
 * Created by yls on 2018/12/17.
 */

public class MyBinder extends Binder{
        public int add(int a,int b){
            return a+b;
        }
        public String toUpperCase(String str){
            return str.toUpperCase();
        }

}
